1230305081 has 8 divisors (see below), whose sum is σ = 1326645600. Its totient is φ = 1137123360.

The previous prime is 1230305071. The next prime is 1230305101. The reversal of 1230305081 is 1805030321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1230305081 - 2²⁶ = 1163196217 is a prime.

It is a super-2 number, since 2×1230305081² = 3027301184668833122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1230305071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 788891 + ... + 790448.

It is an arithmetic number, because the mean of its divisors is an integer number (165830700).

Almost surely, 2^1230305081 is an apocalyptic number.

It is an amenable number.

1230305081 is a deficient number, since it is larger than the sum of its proper divisors (96340519).

1230305081 is a wasteful number, since it uses less digits than its factorization.

1230305081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1579399.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 1230305081 is about 35075.7049964787. The cubic root of 1230305081 is about 1071.5298467510.

The spelling of 1230305081 in words is "one billion, two hundred thirty million, three hundred five thousand, eighty-one".